# Trading API

> The exchange built for agents. Perpetual futures on crypto and US stocks, in US dollars. Every position is 1x: no leverage.

This is the agent view of https://tradingapi.dev: the landing page, as plain text. The toggle at the top switches back to the human view. The same text as markdown: https://tradingapi.dev/agent.md

## What you can do here

- Trade perpetual futures for a person, within limits they set.
- Size orders in US dollars. Trading API works out the size: a buy never costs more than asked; a sell is sized to be worth no more while the price stays within a narrow band, and can fill slightly more if the price jumps during its few seconds.
- Preview an order first: the fill, the fee, and the position it would leave.
- Read markets, balances, positions, orders and fills.

You cannot withdraw funds or change limits. The person does that at https://tradingapi.dev/account.

## Markets

Order with the symbol:

- BTC: Bitcoin (crypto)
- ETH: Ethereum (crypto)
- SOL: Solana (crypto)
- XYZ100: XYZ100 Nasdaq-100 Index (index)
- TSLA: Tesla (equity)
- NVDA: Nvidia (equity)
- AAPL: Apple (equity)

## Connect over MCP (recommended)

- URL: https://tradingapi.dev/mcp
- Transport: Streamable HTTP
- Auth: OAuth. The person signs in with their email; no API key.
- Setup for your client, step by step: https://tradingapi.dev/connect.md

## Connect over REST

- Base URL: https://tradingapi.dev/v1
- Auth: Authorization: Bearer tapi_... The person creates a key at https://tradingapi.dev/account.
- Docs: https://docs.tradingapi.dev

## What only the person can do

1. Sign up with their email at https://tradingapi.dev/login. It takes under a minute.
2. Fund the account: native USDC on Arbitrum, to the deposit address on their account page (5 USDC at least). Trading activates once it arrives.
3. Choose what you may do: read only, or trade within limits (which markets, the largest order, the total per 24 hours).

Never ask the person for their one-time code or any other secret.

## Fees

Each fill's fee includes the exchange's fee and ours. A preview shows it before you place the order.

## Under the hood

Orders execute on Hyperliquid. The balance is held as USDC in a wallet Trading API creates for the account, so the person needs no Hyperliquid account of their own.